To add new test and extend existing one for issue #140

src/test/groovy/com/github/prokod/gradle/crossbuild/CrossBuildPluginScala3Test.groovy

@@ -76,7 +76,7 @@ group = 'com.github.prokod.it'
 version = "1.0-SNAPSHOT"
 
 crossBuild {
-    scalaVersionsCatalog = ["2.10": "2.10.7", "2.11": "2.11.12", "2.12": "2.12.13", "2.13": "2.13.10", "3": "3.2.1"]
+    scalaVersionsCatalog = ["2.10": "2.10.7", "2.11": "2.11.12", "2.12": "2.12.19", "2.13": "2.13.10", "3": "3.3.1"]
 
     builds {
         scala {

src/test/groovy/com/github/prokod/gradle/crossbuild/CrossBuildPluginScalaCompileTasksTest.groovy

@@ -0,0 +1,172 @@
+/*
+ * Copyright 2020-2022 the original author or authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.github.prokod.gradle.crossbuild
+
+import org.gradle.testkit.runner.GradleRunner
+import spock.lang.Requires
+import spock.lang.Unroll
+
+import static org.gradle.testkit.runner.TaskOutcome.SUCCESS
+
+class CrossBuildPluginScalaCompileTasksTest extends CrossBuildGradleRunnerSpec {
+    File  settingsFileKts
+    File buildFileKts
+    File libBuildFileKts
+    File libScalaFile
+
+    def setup() {
+        settingsFileKts = file('settings.gradle.kts')
+        buildFileKts = file('build.gradle.kts')
+        libBuildFileKts = file('libraryA/build.gradle.kts')
+        libScalaFile = file('libraryA/src/main/scala/com/github/prokod/it/example/Example.scala')
+    }
+
+    /**
+     * Test Properties:
+     * <ul>
+     *     <li>Plugin apply mode: Eager</li>
+     *     <li>Gradle compatibility matrix: 7.x, 8.x</li>
+     *     <li>Running tasks that triggers main sourceset configurations: Yes</li>
+     *     <li>build.gradle scripting language: Kotlin</li>
+     * </ul>
+     * This test checks the following plugin behaviour:
+     * <ul>
+     *     <li>The following test ensures that the plugin handles compiling for latest scala 2.12/13 without failure
+     *     when user adds -Xfatal-warnings flag to compiler/li>
+     * </ul>
+     *
+     * @see <a href="https://github.com/prokod/gradle-crossbuild-scala/issues/140">issue #140</a>
+     */
+    @Requires({ instance.testMavenCentralAccess() })
+    @Unroll
+    def "[gradle:#gradleVersion | default-scala-lib:#defaultScalaLibModuleName] applying crossbuild plugin on a project with cross building of scala 2.x and 3.x should fail on compilation of cross build for scala 3"() {
+        given:
+
+        settingsFileKts << """
+rootProject.name = "gradle-scala-template"
+
+include("libraryA")
+"""
+        buildFileKts << """
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath("com.igormaznitsa:jcp:7.0.5")
+    }
+}
+
+plugins {
+    id("com.github.prokod.gradle-crossbuild")
+}
+
+allprojects {
+    repositories {
+        mavenCentral()
+        jcenter()
+    }
+
+    configurations {
+        create("scalaCompilerPlugin") {
+            setTransitive(false)
+        }
+    }
+}
+
+subprojects {
+    group = "com.github.prokod.it"
+    version = "1.0-SNAPSHOT"
+
+    apply(plugin = "scala")
+    apply(plugin = "com.github.prokod.gradle-crossbuild")
+//    apply(plugin = "com.github.maiflai.scalatest")
+
+    crossBuild {
+        scalaVersionsCatalog = mapOf(
+                "2.12" to "2.12.17",
+                "2.13" to "2.13.12"
+        )
+
+        builds {
+            create("v212")
+            create("v213")
+        }
+    }
+
+    dependencies {
+        implementation("org.scala-lang:scala-library:$defaultScalaLibVersion")
+//        testImplementation("org.scalatest:scalatest_2.12:3.2.18")
+//        "scalaCompilerPlugin" ("com.olegpy:better-monadic-for_2.12:0.3.1")
+//        testImplementation("com.vladsch.flexmark:flexmark-all:0.64.8")
+    }
+
+    val copyPlugins by tasks.registering(Copy::class) {
+        from(configurations["scalaCompilerPlugin"])
+        into("\$buildDir/scalac-plugins")
+    }
+
+    tasks.withType<ScalaCompile>().configureEach {
+        val plugins = File("\$buildDir/scalac-plugins").listFiles()?.let {
+            "-Xplugin:" + it.joinToString(",")
+        }
+
+        scalaCompileOptions.additionalParameters =
+            listOf("-feature", "-Xfatal-warnings") + listOfNotNull(plugins)
+    }
+}
+"""
+
+        libBuildFileKts << """
+"""
+
+
+        libScalaFile << """
+package com.github.prokod.it.example
+
+class Example {
+  def add(lhs: Int, rhs: Int): Int = lhs + rhs
+}
+"""
+
+        when:
+        def result = GradleRunner.create()
+                .withGradleVersion(gradleVersion)
+                .withProjectDir(dir.toFile())
+                .withPluginClasspath()
+                /*@withDebug@*/
+                .withArguments('tasks', 'crossBuildAssemble', 'crossBuildResolvedConfigs', /*'publishToMavenLocal', */'--debug', '--stacktrace')
+                .build()
+
+        then:
+        print(result.output)
+        result.task(":tasks").outcome == SUCCESS
+//        result.task(":build").outcome == SUCCESS
+        result.task(":libraryA:crossBuildAssemble").outcome == SUCCESS
+
+        fileExists(dir.resolve('libraryA/build/libs/libraryA_2.12-*.jar'))
+        fileExists(dir.resolve('libraryA/build/libs/libraryA_2.13-*.jar'))
+
+        where:
+        gradleVersion   | defaultScalaLibModuleName | defaultScalaLibVersion
+        '7.6.4'         | 'scala-library'          | '2.12.17'
+//        '7.6.4'         | 'scala-library'          | '2.13.10'
+//        '7.6.4'         | 'scala3-library_3'       | '3.3.1'
+//        '8.7'           | 'scala-library'          | '2.13.10'
+//        '8.7'           | 'scala-library'          | '2.12.19'
+//        '8.7'           | 'scala3-library_3'       | '3.3.1'
+    }
+}